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April 3, 2019

Confused About USB Names? Here is a Chart to Clear Things up


Recently USB-IF announced the release of USB 3.2 specification. The good news is USB industry is doubling the data rate to a new higher level, 20Gbps. In the meantime, USB-IF is also making changes to the terminolog of data rate. Somehow, those changes seem a bit confusing

Why give the old technology a new name? According to CNET reporter, Stephen Shankland, USB-IF believes that it’s easier to absorb the predecessor into a broader USB 3.2 documentation and have everyone use the more human-friendly terms: USB Hi-Speed, USB SuperSpeed 5Gbps, USB SuperSpeed 10Gbps, and USB SuperSpeed 20Gbps.

Here is a chart to help you to be clear about the names of several types of USB.

Max speed Previous Name New Name Marketing Name
5 Gb/s USB 3.0
USB 3.1 Gen 1
USB 3.2 Gen 1 SuperSpeed USB
10 Gb/s USB 3.1 Gen 2 USB 3.2 Gen 2 SuperSpeed USB 10 Gbps
20 Gb/s - USB 3.2 Gen 2 x 2 SuperSpeed USB 20 Gbps

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